Preparation of Au/Ag Core-shell Nanoparticles and Its Surface-enhanced Raman Scattering Effect

Abstract

Abstract: We prepared Au/Ag core-shell nanoparticles by growing Ag shell onto 12 nm Au core, using silver nitrate and sodium citrate as the reactants. By changing the molar ratio of Ag to Au, the shell thickness and thus the size of bimetallic particles could be controlled in convenient way. The formation of core-shell structure was proved by UV-Vis spectra, transmission electron microscopy(TEM), etc.. The core-shell particles showed a more narrow size distribution than Ag colloid prepared without Au core. The SERS activity of the core-shell particles was investigated by using 2,4-dimethylpyridine as the probe, which strongly indicated their potential application in SERS substrate materials.

Key words: Gold nanoparticles, Silver nanoparticles, Au_core-Ag_shell nanoparticles, SERS

CLC Number:

O614

TrendMD:

JI Xiao-Hui, WANG Lian-Ying, ZHANG Xin-Tong, BAI Yu-Bai, LI Tie-Jin, ZHI Zhuang-Zhi, KONG Xiang-Gui, LIU Yi-Chun. Preparation of Au/Ag Core-shell Nanoparticles and Its Surface-enhanced Raman Scattering Effect[J]. Chem. J. Chinese Universities, 2002, 23(12): 2357.

[1]	XIA Dacheng, ZHOU Rui, TU Bo, CAI Zhiwei, GAO Nan, JI Xiaoxu, CHANG Gang, REN Xiaoming, HE Yunbin. Fabrication of Ag/Au Nanowires Array as a SERS Substrate for High-sensitivity Malachite Green Detection [J]. Chem. J. Chinese Universities, 2022, 43(3): 20210731.
[2]	YANG Zhaohua, CHENG Hongjing, YANG Yi, LIU Hui, DU Feipeng, ZHANG Yunfei. Preparation of Silver-loaded Polyvinyl Alcohol Sponge and Its Interfacial Photothermal Driven Water Evaporation Performance [J]. Chem. J. Chinese Universities, 2022, 43(10): 20220181.
[3]	XUE Jin, CAO Xiaowei, LIU Yifan, WANG Min. Preparation of Paper Hollow Gold Nanocage SERS Sensor and Its Rapid and Highly Sensitive Detection for miRNAs in Sputum of Patients with Non-small Cell Lung Cancer [J]. Chem. J. Chinese Universities, 2021, 42(8): 2393.
[4]	CHEN Shaoyun, ZHANG Xingying, LIU Ben, TIAN Du, LI Qi, CHEN Fang, HU Chenglong, CHEN Jian. Controllable Growth of Silver Nanoparticles on TiO₂ Tetragonal Prism Nanarrays and Its SERS Effect [J]. Chem. J. Chinese Universities, 2021, 42(8): 2381.
[5]	BAI Cuiting, YUE Renye, LUO Liegao, MA Nan. Quantitative Analysis of MicroRNA Content by Fluorescence Imaging in Cancer Cells Using Dual-color Fluorescence Nanosensor ^† [J]. Chem. J. Chinese Universities, 2020, 41(6): 1252.
[6]	WEI Simin,WANG Yinghui,TANG Zhishu,SU Rui,HU Jinhang,GUO Hui,LI Chen,JIANG Jintao,SONG Zhongxing. Novel Biosynthesis Method of Silver Nanoparticle by UV Radiation of Cornus Officinalis Aqueous Extract and Biological Activities ^† [J]. Chem. J. Chinese Universities, 2020, 41(6): 1391.
[7]	WANG Tingting, LI Yuan, YANG Lili, BAO Changhao, CHENG Han. In vivo Dynamic Detection of Aloe Polysaccharides Using Carbon Fiber Microelectrodes Modified with Gold Nanoparticles ^† [J]. Chem. J. Chinese Universities, 2020, 41(1): 87.
[8]	FENG Wei,WANG Bowei,JIANG Yang,LI Longyun. Design, Preparation and Surface-enhanced Raman Scattering(SERS) Spectrum of Single Ag Nanodot^† [J]. Chem. J. Chinese Universities, 2019, 40(7): 1345.
[9]	ZHU Qinfu,HU Kezhen,LI Xiaojie,CHEN Mingqing. Preparation of Dendrimer-gold Nanoparticle Composites for pH Responsive Drug Delivery^† [J]. Chem. J. Chinese Universities, 2019, 40(5): 1065.
[10]	WANG Wen,TAO Xiafang,WU Yunyan,ZHAO Nan,CHENG Xiaonong,YANG Juan,ZHOU Yazhou. Fabrication and SERS Performance of “Sandwich” Structured Silver Nanoparticles/Graphene Oxide Substrates^† [J]. Chem. J. Chinese Universities, 2019, 40(4): 667.
[11]	Siqi SUN,Ying WANG,Chuanyin SUN,Runwei WANG,Zhendong ZHANG,Zongtao ZHANG,Shilun QIU. Preparation and Catalytic Performance of Bowl-shaped Amphiphilic ZSM-5 Zeolites Supported Gold Nanoparticles ^† [J]. Chem. J. Chinese Universities, 2019, 40(12): 2436.
[12]	HE Caimei,ZHENG Jingyi,LI Xiaoxia. MoS₂-Gold Nanoparticles and Thionine-gold Nanoparticle Based Signal-enhanced Electrochemical Aptasensor for the Detection of 17β-Estradiol ^† [J]. Chem. J. Chinese Universities, 2019, 40(10): 2090.
[13]	HAN Donglai,LI Boxun,YANG Shuo,YAN Yongsheng,YANG Lili,LIU Yang,LI Chunxiang. Facile Synthesis of Fe₃O₄@Au Core-shell Nanocomposites as an SERS Substrate for the Detection of Thiram ^† [J]. Chem. J. Chinese Universities, 2019, 40(10): 2067.
[14]	FENG Wei,WANG Bowei,ZHENG Yan,JIANG Yang. Preparation and Surface-enhanced Raman Scattering(SERS) of Single Au Nanodot^† [J]. Chem. J. Chinese Universities, 2018, 39(9): 1875.
[15]	ZHANG Lutao, ZHOU Guangming, LUO Dan, CHEN Rong. Rapid Detection on Chlortetracycline Residues in Honey by Surface-enhanced Raman Spectroscopy^† [J]. Chem. J. Chinese Universities, 2018, 39(8): 1662.

Preparation of Au/Ag Core-shell Nanoparticles and Its Surface-enhanced Raman Scattering Effect

PDF (PC)

Knowledge

Abstract

Cite this article

share this article

References

Related Articles 15

Recommended Articles

Metrics

Comments